Electronics Forum: solder paste printing tolerance standard (Page 1 of 18)

solder paste height standard

Electronics Forum | Tue Jan 07 23:38:08 EST 2014 | m_imtiaz

want to know the tolerance the paste height in the solder paste printing. for example if stencil thickness is 7 mil, what will the acceptance level of paste height ( upper and lower) kindly share if any guidelines or formula for the same

IPC/JEDEC standard for solder paste printing defects

Electronics Forum | Fri Mar 25 06:03:40 EDT 2011 | arwankhoiruddin

Thank you for the reply, Davef. I am thinking if I can get the standard rather than "trial and error". If there is no such standard, is there any experience of what is the range for good and acceptable solder paste (e.g. minimum and maximum percenta

IPC/JEDEC standard for solder paste printing defects

Electronics Forum | Wed Mar 23 05:17:23 EDT 2011 | arwankhoiruddin

Hi All. I want to know what is the IPC/JEDEC standard for solder paste printing defects. From the brochures of SPI Machines, the recognized defects are excessive, insufficient, misalignment, no solder, bridging, and solder shape error. What document

IPC/JEDEC standard for solder paste printing defects

Electronics Forum | Fri Mar 25 14:33:26 EDT 2011 | davef

IPC-7525 Stencil Design Guidelines

IPC/JEDEC standard for solder paste printing defects

Electronics Forum | Wed Mar 23 11:08:36 EDT 2011 | davef

There is no such standard, nor should there be. The important thing is to make good solder connections. That's IPC standardization focus, defining good results of manufacturing process. The approach that you take in developing the process of making g

solder paste height standard

Electronics Forum | Wed Jan 08 08:20:52 EST 2014 | emeto

To most of our boards I give 20-30% tolerance in both directions. From experience if you have big aperture on your stencil, the squeegee will scoop certain amount of paste from this aperture and you will see lower height. Depending on your board supp

How to define solder paste printing height tolerance

Electronics Forum | Mon May 07 10:42:09 EDT 2012 | saju86ece

Hi, I need one clarification about solder paste printing height tolerance. How to define and fix the solder paste height tolerance after screen printing for inspection purpose. Currently we are using 5mils thickness of stencil, in that we are gave

How to define solder paste printing height tolerance

Electronics Forum | Mon May 07 16:07:05 EDT 2012 | davef

Start with targets based on the stencil thickness (for height) and stencil thickness times the aperture size (for volume). * Set reasonable upper and lower control limits (+ 25% and –25 % of the targets, for example). * Next, check the printer set-u

printing solder paste on test vias

Electronics Forum | Thu Aug 21 23:35:20 EDT 2003 | kennyg

For ICT purposes I may need to print solder paste on 0.015" test vias. No-clean is not an option for this assembly and OA seems the only choice. Can flux be safely removed from inside the via from the other side during a standard water wash process

Paste printing, acceptable tolerance ?

Electronics Forum | Fri May 26 08:16:14 EDT 2006 | Chunks

This could be what we call a "non-problem". If your print is off slightly, yet after reflow there is no solder related defects, it should be considered OK. Move your inspector from the printer to right after the oven. This would enable them to ins

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